<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>site</title>
		<style type="text/css">
			.box{
				font-size: 20px;
				line-height: 2;
			}
			p{
				font-size: 30px;
			}
		</style>
	</head>
	<body>
		<div class="box"><p>行高单位</p></div>
		
	</body>
</html>